Managing services by hand can be time-consuming. Ubuntu includes an easy applet for enabling and disabling some system services: System -> Administration -> Services Enabling or disabling services only requires changing a check box.

Checking or unchecking a service will immediately change the service’s current running status. It will also alter the service’s boot status. This way, if you uncheck a service, you don’t need to manually stop any running processes and it will not start at the next boot. Checking a service starts it immediately and schedules it to start with the each reboot.

Although this tool does identify some of the better-known services, it does not list custom services and does not identify different runlevels. Since Ubuntu normally runs at runlevel 2, you are only modifying services that start during runlevel 2. In order to control more of the boot options, you either need to modify the files in the /etc/init.d and /etc/rc*.d directories, or you need a better tool, like bum or sysv-rc-conf.

The Services applet was removed from Karmic Koala (9.10). To configure startup services, either use the command line or install bum.

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